Clutch.



J. A. SHARP.

CLUTCH.

APPLIGATION FILED MAR. 1, 1909.

Patented June 22, 1909.

UNITED STATES AENT or EOE.

JAMES A. SHARP, OF SPRINGFIELD, OHIO, ASSIGNOR TO INTERNATIONALHARVESTER COM- PANY, A CORPORATION OF NEW JERSEY.

CLUTCH.

Specification of Letters Patent.

Patented June 22, 1909.

Application filed March 1-, 1909. Serial No. 480,502.

To all whom 'it'mag concern:

Be it known that I, JAMES A. SHARP, a citizen of the 'United States,residing at Springfield, in the county of Clark and iism'whereby'theyare-housed in a manner to protect them from anyaccumulation of matter that would cause disengagement and consequentineflectiveness of operation; the object of my invention being toprovidea clutch mechanism simple in construction and strong and durablein operation. I attain these objects b means of the mechanismillustrated in t e accompanying drawing, in which- Figure 1 represents'aview of two intermeslnng gears, one of them forming part of my improvedclutch mechanism; Fig. 2 is' a side view of a power transmitting shaft,

having one of the clutch members secured thereto and a confplementalclutch and gear member loosely mounted thereon; Fig. 3 is a plan view,partly in section, designed to illustrate the operative relation of theassociatedparts. of thecl'utch mechanism; Fig. 4 is a plan view of thefixed clutch member, showing the manner of constructing its toothedelement; Fig. 5 is a side elevation of a power transmitting shaft havingthe loose member of the clutch mechanism mounted thereon; Fig. 6 is across section of Fig. 3 on the line A-B; and Fig. 7 is a detail drawingof the locking pawl.

The same reference characters designate like parts throughout theseveral views.

1 represents a power transmitting shaft having a clutch member 2 securedthereto by means of pin 3; the clutch member being provided with a rimportion 4 having a series of clutch teeth 5 upon its internal surface.

(i represents a bevel pinion and compleniental clutch member looselymounted upon the shaft adjacent said fixed member and adapted toengage.in an operative manner with a pinion 7 secured to a shaft 8arranged at right angles with shaft 1. The pinion (l is provided uponits inner side with an annular web portion 8 that fits closely againstthe adjacent edge of the rim -l, and t) represents a wing portionprojecting lat orally from the web port-ion of the pinion and within therim 4, the wing extending upon the opposite sides of the hub of thepinion and provided at one side thereof with a semi-circular socket 10which is arranged parallel with the axis of the pinion and adapted toreceive in a rocking manner a heel portion 11 of a pawl 12 that isprovided at its front end with a roller 13 journaled upon a pin arrangedparallel with the axis of the pinion; the roller being adapted to engagewith the clutch teeth 5 when the pawl 1s rock-ed in one direction uponits heel, and to he disengaged therefrom when rocked in an o positedirection; and 14 represents a coi spring having one end abuttingagainst thewin i) and its opposite end against the pawl an operative tomove the latter into engagement with the teeth 5 when its action isunopposed. The pawl 12 is provided with an outwardly extending wing 15that projects beyond the periphery of the pinion 6 and is provided withlaterally projecting rib portions'ltl upon opposite sides thereof thatform an enlarged head portion 17, having a radially arranged faceadapted to engage with a clutch controlling lever 18 pivotally mountedupon a fixed pivot 19 intermediate its ends and connected at oneend withan operating rod 20 and having its opposite end provided with a hookportion' 21 adapted to be thrown within the path of movement of'the headportion of the pawl in a manner to engage therewith and become operativeto rock the pawl 'upon its heel in'a direction to release the rollerfrom engagement with the teeth of the fixed clutch member atpredetermined intervals in a common way.

The pinion 6 is provided with a gap portion 22 in its web portion thatis adapted toreceive the wing portion 15 of the pawl, the gap permittingthe pawl to rock about its heel in an operative mannen The rear wall ofthe gap is arranged in a manner to contact with the rear portion of thehead of the wing portion of the pawl when it is released from engagementwith the clutch teeth by means of the controlling lever, and the impactof the pinion 6, as it is suddenly brought to a state of rest, isreceived thereby in a manner that obviates the danger of breaking thepawl, as is frequently the case when the impact of the :n ving partreceived by the-pawl at a point near its axis of movement.

What I claim as my invention, and desire to secure by Letters Patent,is:

1. A clutch mechanism including, in combination, a driving shaft, aclutch member secured to said driving shaft and provided with alaterally extending rim portion having clutch teeth upon its internalsurface, a

complemental clutch member loosely mounted upon said driving shaft andprovided with an annular web portion fitting closely against said rim, apinion forming part of said complemental member, a socket arrangedthereon and parallel with the axis thereof, a pawl having a heel portionat one end thereof, said heel'portionibeing received 'by said socket, aroller at the opposite end of said pawl and adapted to engage with saidclutch teeth, a spring operative to move said pawl into engagement withsaid teeth, said pawl having an outwardly extending wing projectingbeyond the periphery of said pinion, and clutch disengaging meansadapted to engage with said wing.

2. A clutch mechanism including, in combination, a driving shaft, aclutch member secured to said driving shaft and provided with alaterally extending rim portion having clutch teeth upon its internalsurface, a conipleniental cl uteh member loosely mounted upon saiddriving shaft and provided with an annular web port-ion fitting closelyagainst said rim, a pinion forming part of said coinplen'iental member,a socket arof said pawl and adapted to engage with said clutch teeth, aspring operative to move said pawl into engagement with said teeth, theannular web portion of said complemental clutch member having a gaptherein, said pawl having a wing portion extending outward through'saidgap, and clutch disengaging means adapted to engage with salt wing. a

3. A clutch mechanism including, in com-- bination, a driving shaft, aclutch member secured to said driving shaft and provided with alaterally extending rim portion having clutch teeth upon its internalsurface, a coinplemental clutch member loosely mounted upon said drivingshaft and provided with an annular web portion fitting closely againstsaid rim, a pinion forming part of said complement-a1 member, a socketarranged thereon, a pawl having a heel por tion at one end thereof, saidheel portion being received by said socket, a roller at the opposite endof said pawl and adaptedto engage with said clutch teeth, a springoperative to move said pawl into engagement with said teeth, the annularweb portion of said complemental clutch member having a gap therein,said pawl having a wing portion' extending outward through said gap, andclutch. disengaging means adapted to engage with said wing, said wingcontacting with the rear wall of said gap when the pawl is disengaged-JAMES A. SHARP.

V itnesses:

\V. P. Knnmo, FRANK C. h'linnun.

